ZHCSPL6 January 2022 TPS7H4003-SEP
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3
Feature Description
- 7.3.1 VIN and Power VIN Pins (VIN and PVIN)
- 7.3.2 Voltage Reference
- 7.3.3 Adjusting the Output Voltage
- 7.3.4 Safe Start-Up Into Prebiased Outputs
- 7.3.5 Error Amplifier
- 7.3.6 Enable and Adjust UVLO
- 7.3.7 Adjustable Switching Frequency and Synchronization (SYNC)
- 7.3.8 Soft-Start (SS/TR)
- 7.3.9 Power Good (PWRGD)
- 7.3.10 Sequencing
- 7.3.11 Output Overvoltage Protection (OVP)
- 7.3.12 Overcurrent Protection
- 7.3.13 Thermal Shutdown
- 7.3.14 Turn-On Behavior
- 7.3.15 Slope Compensation
- 7.3.16 Small Signal Model for Frequency Compensation
- 7.4 Device Functional Modes
-
8 Application and Implementation
- 8.1 Application Information
- 8.2
Typical Application
- 8.2.1 Design Requirements
- 8.2.2
Detailed Design Procedure
- 8.2.2.1 Operating Frequency
- 8.2.2.2 Output Inductor Selection
- 8.2.2.3 Output Capacitor Selection
- 8.2.2.4 Output Schottky Diode
- 8.2.2.5 Input Capacitor Selection
- 8.2.2.6 Soft-Start Capacitor Selection
- 8.2.2.7 Undervoltage Lockout (UVLO) Set Point
- 8.2.2.8 Output Voltage Feedback Resistor Selection
- 8.2.2.9 Compensation Component Selection
- 8.2.3 Parallel Operation
- 8.2.4 Application Curve
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
8.2.4 Application Curve
The evaluation module for the TPS7H4003-SEP was used to capture a load step response of the device. The testing conditions were:
- VIN = PVIN = 5 V
- VOUT = 1 V
- Load step = 9 A to 18 A
- Switching frequency = 500 kHz
Figure 8-4 9-A
to 18-A Step Response for 500-kHz Switching
Operation
Figure 8-5 18-A to 9-A Step Response for 500-kHz Switching
Operation